Probabilistic Seismic Hazard Assessment for Amaravathi Region, Andhra Pradesh
K. Srikanth1, S.V. Surendhar2, M. Shiva Rama Krishna3, R. Ramakrishnan4
1K. Srikanth, P.G. Student, Vignan’s Foundation for Science, Technology & Research University, Vadlamudi, Andhra Pradesh, India.
2S.V. Surendhar, Associate Professsor, Vignan’s Foundation for Science, Technology & Research University, Vadlamudi, Andhra Pradesh, India.
3M. Shiva Rama Krishna, Associate Professsor, Vignan’s Foundation for Science, Technology & Research University, Vadlamudi, Andhra Pradesh, India.
4R. Ramakrishnan, Associate Professor, Amrita University, Coimbatore (TamilNadu), India.
Manuscript received on 05 April 2019 | Revised Manuscript received on 12 April 2019 | Manuscript Published on 26 July 2019 | PP: 279-283 | Volume-8 Issue-6S4 April 2019 | Retrieval Number: F10570486S419/19©BEIESP | DOI: 10.35940/ijitee.F1057.0486S419
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This article explains an analytical attempt that estimates seismic hazard for Amaravathi city. The present study has been carried out contemplating the available faults and epicentral data within a radius of 300km of the Amaravathi region. The homogenous earthquake catalogue has been prepared for Amaravathi region by Steep’s method. The seismic hazard parameters ―a‖ and ―b‖ for Amaravathi city were evaluated by Gutenberg-Ritcher method. The ―a‖ and ―b‖ values obtained as 4.69, 0.6468 respectively. The total 353 epicenters and 31 faults were considered in this seismic analysis for the estimate of PSHA for Amaravathi. The ground motion produced by the faults at this site has been estimated by using the region specific Ground Motion Prediction Equation (GMPE) developed by the raghukanth and lyenger (2007). The probability of occurrence of different magnitude classes was estimated. The hazard curves and mean annual rate of exceedance for Peak Ground Acceleration were calculated by using ground motion estimated in this area. The Uniform Hazard Response Spectrum (UHRS) for the ranging time periods between 0.1 – 4 seconds was prepared. PGA values for Amaravati region was found to be in between 0.001g to 0.3g from seismic hazard map that was prepared in this study.
Keywords: Peak Ground Acceleration, PSHA, Hazard Assessment, Seismicity, Amaravathi City.
Scope of the Article: Social Sciences